Mangle.



No. 665,545. Patented 1an. s, wol.

G. s. PLACE & F. P. BosBAcK.

MANGLE.

(No Modem (Application man Augfle, 1899.1 l' 4 sheets-Sheet I.

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MANGLE.

(Application filed Aug. 12, 1899.)

` 4 Sheets-Sheet 3.

Q n I I (No Model.)

P No. 6s5,545. Patented 1an. a, no'l.

G. s. PLACE af. P. nosBAcK.

MANGLE.

(Application led Aug. 12, 1899.)

(No Model.) 4 sheets-sheet 4.

v ,7, ,n 1123/? :jzzsm NITED STATES PATENT Fries.

GEORGE G. PLACE AND FREDERICK P. ROSBACK, OF CHICAGO, ILLINOIS,ASSIGNORS TO THE STEEL ROLL MANGLE COMPANY, OF SAME PLACE;

IVlANG LE.

SPECIFICATION forming part of Letters Patent No. 665,545, dated January8, 19.

Application filed August 12, 1899. Serial No. 727,003. iNo model.)

To a/ZZv whom, t muy concern.-

Beit known that we, GEORGE G. PLACE and FREDERICK P. RosBAoK,citizens ofthe United States, residing at Chicago, in the county of Cook and Stateof Illinois, have invented certain new and useful Improvements inMangles, of which the following is a specification.

Our invention relates to that class of mangles known as steel-rolllnangles, in which there is a main hollow metal roll adapted to beheated by means of gas or steam and a set of supplementary and idlerrolls carrying an endless apron or aprons provided with mechanism formoving one Vor more sets of these rolls toward and away from each otherand the main roll, so as to facilitate the operationl of ironing.

The present invention relates particularly tures, combinations,'anddetails of construction hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a broken front elevation of amangle constructed in accordance with our improvei ments; Fig. 2, a planView of the same lookj ing at 1t from above; Fig. 3,-a sectional ele-Vation taken on lines 3 of Figs. l and 2 looking in the direction of thearrows; Fig. 4, a longitudinal sectional elevation of a portion of themachine, taken on line 4 of Fig. 2 look- 'ing in the direction of thearrow; Fig. 5, an Aend elevation of a portion of one of the standards;Fig. 6, an end view of one portion of the carriage for the supplementaryand idler rolls; Fig. 7,.an enlarged view of an adjusting-screw with thetension-spring removed, showing a sectional view of the sliding nut,taken on line 7 of Fig. 8; and Fig. 8, an enlarged end View of thesliding nut shown in Fig. 7.

In constructing our improvements we make a main frame portion, whichcomprises two standards or leg portions A, tied together by means of thecross-bars a and c'. Upon this frame portion are mounted the journalboxes or blocks B, which form the bearings in which the journals of theheating-roll C are rotatably mounted. This heating-roll, as shownparticularly in Fig. 4, is made hollow, and extending axially through itis a burner c of the gas or gasolene type, the valve C' of which isshown on the outside of Figs. l and 2. To rotate this heating-roll, oneof its journals is provided with a spur-gear c', engaging with aspur-pinion c2, mounted upon a stud c3 affixed to the frame of themachine. This pinion is arranged to be engaged by a crank-handle D, asshown particularly in Figs. I and 4, and by which the pinion and throughit the intermediate gear and the heating-roll are rotated. As abovesuggested, this heating or main roll is made of metal in the form of atube and hollow. lThe outer surface of this metal roll, which ispreferably cast metal or steel, is finely dressed, or, in other words,turned and finished to a high degree of polish and smoothness, so thatin ironing clothes or other desired articles a good finish may be givento the same.

It is highly desirable that the supplementary and idler rolls, whichcarry an endless apron, be mounted in such a way as to be moved towardor from each other and the main and heating roll as simply as possible,with the least expenditure of power, and so as to accomplish the work aseconomically and eliciently as possible. In our structure thesupplementary and idler rolls are arranged under and adjacent to theheatingroll so as to be raised and lowered, and in order to accomplishthe raising and lowering in as quick, easy, and efficient manner aspossible a carriage for the rolls is provided, formed of twobracketsE,having tongues @and e arranged to slide in vertical grooves a2in the standards and directly underneath and in line with the axis ofthe main heating-roll. These bracket portions, as I prefer to term them,are tied together by means of two rods e2, which form rock-shafts andwhich unite both brackets together in one substantial frame, which wewill term a carriage. A' lever G is mounted on and iixedly secured toone of the rods or rock-shafts c2, at each end thereof, and a lever G,corresponding to the lever G, is mounted on and iixedly secured IOO tothe other rod or rock-shaft c2, at each end thereof. These levers G andG' are secured to their respective rock-shafts by set-screws orotherwise, so that each pair of levers can be properly set or adjustedon its shaft and be locked to the shaft to rock therewith. Each leverextends above its rod or rockshaft and has on its upper end a half-boxor journal-bearing for the reception of the two supplementary rolls Hand l-I, one of which is mounted in the half-boxes of the levers G andthe other in the half-boxes of the levers G'. The supplementary rollsare pivotally secured to the movable frame or carriage by thesupporting-levers and their rock-shafts, and the levers permit the rollsto be properly adjusted in relation to the heating-roll. The two rollsmay be held with the required force or tension against the mainheating-roll by the means hereinafter described.

The idler-rollsl and I' are rotatably mounted in the sliding blocks t'and 71, which blocks are slidingly mounted on the upper surface of thecarriage. Around these idler-rolls and a portion of the supplementaryrolls is passed, belt-like, an endless apron K, of a width nearly equalto the length of the idler-rolls. To hold this apron under the desiredtension when in operation, the idler-rolls are rotatably mounted insliding blocks t' and i on the carriage, and headed adj Listing-screws722 are provided, (see Figs. 2 and 6,) one for each sliding block. Eachof the adj listing-screws is supported near its extremities by uprightson the carriage and rotatably mount-ed therein above and parallel withthe surface of the carriage. Each adjusting-screw for the idlerroll I'is preferably passed loosely through a smooth perforation or hole in itsrespective sliding block t" to allow the block to slide "upon the screwand the surface of the carriage.

One of\the idler-rolls, preferably the roll I, is provided with two adjllisting-screws t2, which pass loosely through smooth perfor-ations inthe sliding blocks t", in which the idler-roll is mounted, so as topermit the blocks to slide back and forth over the threads of thescrews. These adj usting-screws t2, used and shown in connection withthe roll I in Figs. 2 and 6, are in every respect identical with thoseused in connection with the roll I and are threaded in exactly the samemanner. (See Figs. 2, 3, and'6.) With this explanation and byaninspection of the drawings it will be readily understood that thethreads shown on the adjusting-screw t2, near the roll I at the leftside of Fig. 6, extend to the end of the screw through the sliding blockz". These adjusting-screws, used in connection with the roll l' andblock fi', have no threaded connection with the blocks through whichthey pass, but each has threaded connection with the nut t3, throughwhichv it passes. The nuts 113 are provided with shoulders of theordinary kind, which are in sliding contact with the surface of thecarriage. They prevent the nut from turning when the screw is turnedwithin it and cause it to move axially along the stem of the screw inresponse to the turning of the screw. These are simply machine-nuts ofthe ordinary and well-known type, beingv perforated and screw-threadedto fit the screw and threads on which they are mounted and havingshoulders on the peripheries to prevent the nut from turning with thescrew. These nuts do not differ materially from the ordinary machine-nutexcept in the use to which they are applied. Around the stem of each ofthese two screws between the nut and the sliding block is mountedacompressible helical spring t, (see Figs. 2 and 6,) one end in contactwith the sliding block and the other end in contact with thenon-rotatable sliding nut, causing the tension of the spring to increaseas the nut is moved toward the sliding block and to decrease as it ismoved away from the block, thus holding the sliding block, with its rollI and the apron, yieldingly under tension, a very desirable provision inthis class of machines.

The stems of the two adj listing-screws for the idler-roll I are eachpreferably passed through a respective sliding block i, in which thatroll is mounted, and have threaded engagement therewith, so that as thescrew is turned in one direction the sliding block is caused to movetoward the head of the screw. The turning of the adjusting-screw in theother direction permits the tension of the endless aprony to move thesliding block in the opposite direction, thus permitting the adjustmentof the idler-roll I to any desired position within the path of thesliding block.

When the carriage is moved upwardly, so as to have the apron contact themain heating-roll, it is desirable that such apron and supplementaryrolls be yieldingly held against the heating-roll, so that differentthicknesses of work may be passed between the heatingroll and apronwithout injuring the machine or work and so as to provide asubstantially' uniform tension. In order to accomplish this result, oneof the swinging leverspreferably Gr-is provided with a threaded rodg',to which it is pivotally connected, and the rod is passed through asmooth bore in the end g2 of the other swinging lever. The outer end ofthis threaded rod is provided with an adjustingnut g3 and a lock-nut g4to hold the nut g3 in position, while between the nut g5 on the threadedrod and the end g2 of the second swinging lever is inserted atension-spring gs. It will thus be seen that when the parts are in theposition shown in Fig. 3 any downward pressure between the mainheating-roll and apron tends to spread the supplementary rolls apart andagainst the tension ofthe intermediate tension-spring g. For varyingthicknesses of work the tension is practically uniform.

It is desirable that some simple and economical means be provided forraising and lowering the carriage, with the supplemen- IOO IIO

tary and idler rolls, toward and away from the main heating-roll and toprovide spring mechanism which will in a measure counterbalance theweight ot' the carriage. To accomplish this result, a pair oftoggle-levers L and L' is provided for and arranged at or near each endof the carriage, the lower ends of which are pivoted to the frameportion and the upper ends to the carriage. Both of these upper membersare provided with eX- tending arms Z, connected together by means of arod or handle Z. Two counterbalancingsprings L2 are provided andconnected-to the toggle-levers at their common fulcrum-point and withthe lower part of the machine at Z2, at a point to one side of and outof line with the pivotal points of the toggle-lever. By this arrangementit will be seen that when the handle ofthe toggle-lever is presseddownwardly to move the carriage away from the main heating-roll thecommon fulcrum-point is moved backwardly. This stretches thecounterbalancing-springs and serves to let down lthe carriage easily andwithout any shock. At the same time when it is desired to raise thecarriage the counterbalancingsprings are under their greatest tensionand assist the operator so much that but a very small amount of energyor power is necessary to raise the carriage.

We claiml. In a mangle of the class described, the combination of a mainframe, a main heatingroll rotatably mounted in such frame, a carriageslidingly mounted in such frame and provided with supplementary andidler rolls and an endless apron passed around such rolls and arrangedto carry such apron and rolls toward and from the main heating-roll,toggle-lever mechanism pivotally secured to the carriage and to theframe at or near its lower portion, and counterbalancing-springmechanism secured to the toggle-levers and to the frame at a point awayfrom and out of line with the pivotal points of the toggle-levers,substantially as described.

2. In a mangle of the class described, the combination of a frameportion, a main heating-roll rotatably mounted in the frame portion,acarriage slidingly mounted in the frame portion under the heating-rollso as to have vertical movements, a pair of swinging levers pivotallymounted on the carriage and carrying supplementary rolls at their upperends, tension-spring mechanism for yieldingly holding the swinginglevers in operative position, idler-rolls mounted on such carriage,

and an endless apron passed around the idler and supplementary rolls,substantially as described.

3. In a mangle of the class described, the combination of a frameportion, a main heating-roll rotatably mounted in such frame portion,acarriage slidingly mounted in the frame underneath the heating-roll soas to have vertical movements, a pair of swinging levers at each end ofthe carriage carrying supplementary rolls at their upper ends, athreaded rod pivotally secured to the lower free end of one swinginglever and passed through a smooth opening in the end of the otherswinging lever, nut mechanism for regulating the distance between suchswinging levers, a nut on the threaded rod between the swinging levers,a tension-spring between the nut and one of the swinging levers toyieldingly hold the supplemental rolls in position, idler-rolls on thecarriage, and an endless apron passed .around the idler andsupplementary rolls,

substantially as described.

4. In a mangle of the class described, the combination of a frame, amain heating-roll rotatably mounted in such frame, a carriage mounted inthe frame underneath the heating-roll to slide vertically, two swinginglevers at each end of the carriage having their swinging ends onopposite sides of the main roll,two supplementary rolls rotatablymounted on the swinging ends of the levers parallel with and adjacent tothe main roll, a threaded rod pivotally secured to the lower free end ofone swinging lever and passed through a smooth opening in the end of theother swinging lever, an adjusting-nut on the outer end of the threadedrod for regulating the distance between such swinging levers, atension-spring and adjusting-nut on the rod between the free ends of theswinging levers `for yieldingly holding the supplemental rolls inposition, idler-rolls mounted on the carriage, an endless apron passedaround the idler and supplementary rolls, sliding blocks on the carriagein which the idler-rolls have their bearings, adjusting screws formoving the sliding blocks, and springs on the adjusting-screws for oneroll to hold the sliding blocks of that roll yieldingly in position,substantially as described.

GEORGE G. PLACE. FREDERICK P. ROSBACK.

Witnesses:

THOMAS F. SHERIDAN, THOMAS B. MCGREGOR.

IOO

